.sure,
.xiuGai  {
position:fixed;
left: 40%;
top: 40%;
width: 200px;
height: 100px;
padding: 20px;
text-align: center;
background-color: rgba(0, 255, 255, 0.61);
/* z-index: 999; */
border: 1px solid black;
display: none;
}